Process files by their last modified dates in Groovy

process-old-files-by-lastmodifieddates.groovy

// 'delete' is a process example
public void deleteOldFiles(File path) {
  long startOfDay = new Date().clearTime().time
  path.eachFile { file ->
    if (file.lastModified() < startOfDay) {
      file.delete()
    }
  }
}